Ah, finally I managed obtaining a higher resolution ones, and is untranslated original. Should you keep the old, lower resolution Chinese one or not, it's up to your decision; I'm not going to do the uneasy deleting work.
Damn, I forgot my password, so I ended up creating a new identity... ah well. Anyway, I saw this series in Korean before! (including the school part Salem up there mentioned) Maybe I should put short summaries... (since I dunno how to add translations or tags)